Impeller



FIG. 1 is a perspective view of an impeller according to my design;

FIG. 2 is an additional perspective view of the impeller;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is an additional side view thereof;

FIG. 7 is top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a cross-sectional view of the impeller taken along the line 9-9 shown in FIG. 7; and,

FIG. 10 is a cross-sectional view of the impeller taken along the line 10-10 shown in FIG. 7.

The broken lines shown in the drawings are for the purpose of illustrating portions of the impeller that form no part of the claimed design. 

CLAIM The ornamental design for an impeller, as shown and described. 